The influence of magnesium and hydrogen introduction in sputtered zinc oxide thin films

Jun Hang Huang, Chuan Pu Liu

Research output: Contribution to journalConference articlepeer-review

21 Citations (Scopus)

Abstract

Polycrystalline ZnO thin films doped with magnesium or hydrogen were prepared on Corning 7059 glass substrates by RF magnetron co-sputtering or reactive sputtering. The chemistry, morphology, phase evolution and optical properties of the resulting thin films with various deposition parameters were investigated. X-ray photoemission spectroscopy results show that a linear composition variation for Zn1-xMgxO with amorphous phase can be obtained by varying sputtering power, which results in increasing optical bandgap linearly with x for better light transmission. However, conductivity drops dramatically as soon as magnesium is introduced. On the other hand, hydrogen doping is demonstrated to enhance both crystallinity and conductivity, which was then degraded upon annealing. However, only being exposed to atmosphere would not change conductivity, implying the characteristics of chemical adsorption of hydrogen in the films. The larger grained morphology of the thin films doped with hydrogen was ascribed to both surface fast diffusion and etching. Both dopants can be applied to improve the properties of zinc oxide films.

Original languageEnglish
Pages (from-to)152-157
Number of pages6
JournalThin Solid Films
Volume498
Issue number1-2
DOIs
Publication statusPublished - 2006 Mar 1
EventProceedings of the Third Asian Conference on Chemical Vapor Deposition (Third Asian-CVD), Third Asian CVD -
Duration: 2004 Nov 122004 Nov 14

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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